For the peeps in Ca., y'all need to check out this guy and his shop if you are into having an iPad control your audio system...
Soundman Car Audio - Home of the iPad Car Install
I was thinking about asking him about the iPad mini since he already installs iPads. I have heard a rumor that if you send him your radio dash piece he will customize it to house the iPad/iPad mini. I have not heard of a price yet. Post on here if anyone talks with them.